Tension governor for weaving machines



Dec. 28, 1926 1,612,051 J. E. QUIG TENS ON GOVERNOR FOR WBAVING MACHINES Filed Feb 25/.1926

d Sheets-Sheet 1 INV ENTQR JHME$,E.QUI6.

HTT'YS.

Dec.- 28 1926. 1,612,051

J. E. QUIG TENSION GOVERNOR FOR WEAVING MACHINES Filed Feb 2 3.926 3 Sheets-Sheet 2 INVENTDR. 1 JHMES.E.QUI6.

-Dec. 28 1926.

J. E. QUIG TENSION GOVERNOR FOR WEAVING MACHINES Filed Feb. 25, 1926 3 Sheets-Sheet 5 Patented Dec. 28, 1926.

t an

JAMES nnriroui) sure, or oonnwritt, camera, CANADA.

TENSION GOVERNOR FDR WEAVilIIZI'Gr MAGHINES.

Application filed February 23, 1826, Serial No. $0323, and in Canada February 15, 1926.

This invention relates to improvements in tension governors for weaving machines and the objects of the invention are to provide a simply constructed, durable and efliciently operated tension governor of this description that can be manufactured and installed at a reasonable price and in which the several parts are improved and simplified to more satisfactorily perform the functions required of them.

Broadly speaking, the invention relates to. tensioning devices generally provided for weaving machines, the object being. broadly stated, to provide an effective device of the type specified for keeping a constant ten sion on the weave.

A still further object is the provision of a device of this character com a chain brake for the beam. in combination with means actuated by the tension on the whip roller to lessen the action of the friction chain against tension means, thereby :permittine; the warp to freely let off from the beam to the whip roll-er. As the tensioning on the whip roller decreases, the tensioning of-the chain brake or the like increases the friction on the beam, thereby lessening the speed at which the warp is let off from the beam, these operations being automatic so that the speed with which the warp is let off from the beam is automatically governed with accuracy.

Reference is, therefore, now made to the drawings, in which like characters of reference indicate corresponding parts in .each figure and in which,

Figure l is a side elevation of a weaving machine fitted with my improved tensioning means,

Figure 2 is a front elevation,

Figure 3 is a detail view of the tensiongovernor,

Figure 4: is Figure 3.

Figure 5 is a section on the line of l ia'ure 4i,

Figure 6 is a modified form of mounting for the rollers.

Proceeding now to a more detailed discussion of the drawings, 10 designates a ame equipped with bearings 11 rotatably supporting therein the shaft 12 of the warp beam or roll 13. The latter carries terminal brake pulleys 14 and 15 around. which the friction brake chains 16 and 17 are trained as shown to advantage in Figure 1 wherein asection on the line r t of to the frame as indicated at 4:5.

16 the able brackets 24. Crank arm 22 is secured, by a slot and pin connection 22, to one terminal of a rod 25. The other terminal of this red is pivotally secured in the fork '26 of a member 27 passing through a slot for-med in an extension 28 ofa member 29 fi-Xed to the whip roll carryii'ig shaft 80 which extends transversely of the frail-1e and isrotatably mounted in suitable bearings 31 Member 27 is adjustable to different positions longitudinally of extension 28 through the agency of a hand wheel '32 ha vii 1p; a stem 33 threaded through a bracket 34L of the member and secured by a swivel joint 35 tothe forked portion of member 27. 'Llhis adjustment of member 27 serves, through rod 25 and crank 22, to vary the normal. braking action of the friction chains.

Shaft O carries thereon a free turning whip roll 86 and also supports a free turning feeler roll 37 having its supporting shaft 7 journalled between the lower extremities of a pair of bracket arms 88 having their upper extremities rigidly attached to said shaft 30. These brackets 38 preferably project from the shaft at a tangent thereto whereby the feeler roll is positioned to engage the warp as it ,passes from the bean'i to the whip roll and causes the weave 'to follow a tortuous ,pathto the said whip roll.

The member 2-9 which, as previously stated, is fixed to shaft 30, is provided with a rigidly attached lever arm 39 having its free end secured by a slot and pin connection 40 to one terminal of a link ll. The other terminal of this link is secured by a slot and pin connection 42 to one terminal of a weighted arm 44: intermediatcly pivoted The other terminal of arm 44 carries a weight 46ndjustably secured thereon by means of a bolt 47 passing through the weight and through a slot 48 in the arm and adapted to be se-- cured in different positions longitudinally of said slot by means of the securing; nut 49.

For certain types of machines the whip and feeler rolls may be mounted as shown in Figure 6. In this modified arrangement the shaft of the whip roll 36 is supported by brackets fastened to the sides 10 of the frame while the supporting brackets 38 for the feeler roll 37 are suspended from a shaft 51 carried by the brackets 50 inwardly of the whip roll. This revised assemblage enables the invention to be applied to different types of machines Without changing the operation of the parts involved.

With reference to the functioning of the invention it will be understood that the warp passes from beam 13 around the inner side of feeler roll 37 and from thence around the outer side of the Whip roll 36 as shown by dotted lines in Figure 1. Due to the position which the feeler roll occupies between the beam and the whip roll it is manifest that as the tension on the warp is increased the feeler roll swings outwardly and serves through its connection to the shaft 30 to operate the extension 28 and rod 25 in a direction to relax the pull on the friction chain so as to permit a faster letoff of the warp. Concomitant with this action, lever arm 39 and link 41 are moved in a direction to raise the weighted end of the arm 4A thereby overcoming the resistance oifered by the weight to rel z-zation of the brake. Vi hen the warp becomes slack the weight 46 acts through arm 44 and its connection to the shaft 30 to operate the rod 25 in a direction to apply or tension the brake chains.

By adjusting weight 46 to different positions along the arm 44 the beam may be regulated to operate at a predetermined speed and the let-ofi' controlled as desired.

As many changes could be made in the above construction and many apparently widely different embodiments of my invention, within the scope of the claims, constructed without departing from the spirit or scope thereof, it is intended that all mat ter contained in the present specification and accompanying drawings shall be interpreted in an illustrative and not in a limiting sense.

What I claim in my invention is:

1. In a weaving machine the combination of a warp beam equipped with brake pul' leys, chains trained around said pulleys and anchored at one end, a rotatably mounted spindle carrying rigidly attached arms secured to the remaining ends of said chains, a reciprocal rod connected at one end to said spindle and operable to rotate the spindle either in a chain tGHSiOIlillg or a chain relaxing direction, a rotatably mounted shaftcarrying a fined extension connected to the other end of said rod and means operable alternately to rotate said shaft in opposite directions to tension and relax the chains as the tension on the warp decreases and increases.

2. The structure recited in claim 1 in which the means for rotating said shaft in one direction comprises a pair of brackets pro jecting laterally from the shaft and rigidly secured thereto and a rotatable feeler roll supported by said brackets and adapted to be moved laterally by engagement with the warp when the tension on the warp increases.

3. The structure recited in claim 1 in which the means for rotating said shaft in a chain tensioning direction comprises ately pivoted weight carrying arm equipped with a weight at one end, second arm having one end rigidly carried by said shaft and a link-connection between the free ends of said arms.

4. In a weaving machine the combination of a warp beam equipped with brake pulleys, chains trained around said pulleys and anchored at one end, a rotatably mounted spindle equipped with rigidly attached arms fastened to the remaining ends of said chains, a crank carried by said spindle, a chain ap plying and relaxing rod having one end secured to the crank by a slot and pin connection, a rotatably mounted shaft carrying a fixed lateral extension having a slot formed therein, a member slidably mounted in said slot and pivotally connected to the remaining end of said rod, adjusting means for securing said member in dif erent positions along the length of said slot and means for alternately turning said shaft in opposite directions in response to varying tension of the warp and in such manner as to relax the brake chains when the warp tension increase-:- and to tension said chains when the warp tension decreases.

5. The structure recited in claim l in which the adjusting means for securing said member in different positions along the length of said slot comprises a bracket carried by a shaft and an adjusting screw threaded through said bracket and connected to said member.

In witness whereof I. have hereunto setmy hand.

JAMES EDMOND QUIG.

an intermedilOO 

